If you are annoyed by the .XX.pre-cvfix backup files you can disable them either on the command line (--no-backup) or in the config file.

Configuration

Codevalidator uses a mapping of file name patterns to “rules” in order to know which validation rules should be applied for a certain file.
The script contains a more-or-less sane default configuration (see DEFAULT_CONFIG at the top of codevalidator.py).
You can overwrite the configuration by putting a .codevalidatorrc file in your home directory.
The file must be JSON and must have the same structure as DEFAULT_CONFIG.

Advanced Usages

You can use the --fix--filter combination to directly filter your current buffer in VIM: